动物营养学报2019，Vol.31Issue(3)：1434-1441,8.DOI:10.3969/j.issn.1006-267x.2019.03.052
木聚糖酶对肉鸡不同类型饲粮净能值的影响
Effects of Xylanase on Net Energy Value of Different Type of Diets for Broilers
摘要
Abstract
This study was conducted to investigate the effects of xylanase on net energy value of corn-soybean meal diet and corn distillers dried grains with solubles ( DDGS) diet for broilers by energy metabolism test u-sing open-circuit respiratory calorimetry apparatus for poultry. According to 2×2 double factorial test design, diet type ( common diet or corn DDGS diet) and diet xylanases (0 or 0.2 g/kg) as the two main factors, and 4 groups were formed. A total of 120 ROSS 308 male broilers were randomly allocated to 4 groups with 6 rep-licates per group and 5 broilers per replicate. The test was divided into 4 periods and 31 days per period. One type of diet was used and thirty 1-day-old male broilers were selected per period. The broilers were raised in chicken houses with different pens from 1 to 20 days of age, and the broilers were fed a commercial basal diet from 1 to 14 days of age, then changed to test diets at 15 days of age until the end of test. Twelve broilers were randomly selected and placed in individual 6 respiratory chambers of respiratory calorimetry apparatus after weighed at 21 days of age, and 2 broilers per chamber. Gaseous exchange and excretion were measured in re-spiratory chambers for 9 days, including 3 days of adaptation period, 3 days of respiratory calorimetry and 3 days of fasting heat measurement, and digestion metabolism test were carried out simultaneously. The results showed as follows: 1) xylanase significantly increased respiratory quotient ( RQ) of broiler ( P<0. 05) , in-creased average daily gain and decreased the ratio of feed to gain ( F/G) (0.05≤P<0.10) , and had no signifi-cant effect on energy utilization ( P>0.05) . 2) Compared with common diet, corn DDGS diet significantly in-creased average daily feed intake, F/G, O2 consumption, RQ, total heat production ( THP) and metabolizable energy intake ( MEI) of broilers ( P<0.05) , and significantly decreased apparent metabolic energy ( AME) , net energy ( NE) and the ratio of AME to NE ( P<0.05) . 3) The interaction of xylanase and diet type had sig-nificant effects on MEI and deposition energy of broilers ( P<0.05) . In this study, corn-soybean meal diet and 30% corn DDGS diet for broilers supplemented with 0.2 g/kg xylanase had no significant effect on NE value of diets.[ Chinese Journal of Animal Nutrition, 2019, 31(3) :1434-1441]关键词
木聚糖酶/净能/肉鸡/玉米干酒精糟及其可溶物/间接测热法Key words
xylanase/net energy/broilers/corn distillers dried grains with solubles/indirect calorimetry分类
农业科技引用本文复制引用
班志彬,闫晓刚,张莹,于维,郎朝丽,梁浩,李立佳,苏斯瑶,杨华明..木聚糖酶对肉鸡不同类型饲粮净能值的影响[J].动物营养学报,2019,31(3):1434-1441,8.基金项目
吉林省农业科学院创新工程项目(CXGC2017ZY002) （CXGC2017ZY002）
